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(No Model.)

11. Q. ALLIS.

MATTRESS.

1110.261316.' Patented Nov. 14, 1882.

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NtTED STATES PATENT OEEtcE.

ABRAM Q. ALLIS, OF NEW YORK, N. Y.

MATTRESS.

SPECIFICATION forming part of Letters Patent No. 267,316, dated November14, 1882.

Application tiled J une 30, 1882.

T o all whom it may concern:

Be it known that I, ABRAM Q. ALLIs, ,a citizen ot' the United States,residing in the city and State of New York, have invented new and usefulImprovements in Spring-Mattresses, ot' which the following is a i'nlland clear specification. i

In the accompanying' drawings, forming part ot this specification,Figure l represents a top view or plan ot' my mattress when extended,and Fig. 2 a side elevation.

Similar letters of reference indicate corresponding parts. i

The object ot' my invention is to produce a mattress that is capable ot'being tted to any size bedstead and which can be readily transferredfrom place to place, and one that has all the advantages ofsimilar-constructed mattresses, and yet can be manufactured for lesscost.

My invention consists ot' a series of parallel slats both on the top andbottom of the mattress, and having between them the coiled springsordinarily used. The top slats are connected together by lmeans ofjointed arms pivoted tothe slats. The lower slats are connected togetherby means ofjointed arms the same as the'top one, the jointed arms ot'the bottoni being longer than those of the top.

In the drawings, a designates the parallel slats ofthe bottom, and athe'parallel slats of the top. y

o represents the jointed arms which are pivoted to the bottom slats, andc the jointed arms which are pivoted to the top slats.

e represen ts the coil-springs,which are placed between the top andbottom parallel slats and held in their place by means of rivets or anysuitable device.

At each corner of my mattress, to the trst joint ofthe arms whicharesecured to the bottom row of slats, is attachetllv one end ot' a curvedspring, e', the other end ot' which-is secured to the outside top slat,as hereinafter described.

In constructing a mattress of this description it is preferable to makethe jointed arms which are attached to the lower parallel slats longerthan thosevwhich are attached to the top slats, so that the curvedspring attached to the irst jointed arm, as above described,

(No model.)

will form an acute angle, (see Fig. 1,) and thus act as a brace toprevent any longitudinal movements ot' the slats.

I am aware that spring-mattresses having coiled springs and parallelslats at the bottom with jointed arms have been heretofore patented, asshown in patent to Le Quesne, No. 184,880, where the springs are heldtogether on the top by means of chains or links. This mattress is opento the objection that the springs are free for lateral movement when themattress is partly compressed, and the springs usually upset and becomedestroyed, while in my mattress the springs are held in position bybeing secured t0 the slats both at the top and bottom.

I claim that my mattress is less liable to get out ot' order, owing toits simplicity, and it is more durable and less expensive to make.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is

1. A spring-mattress composed of a series of parallel slats, a, formingthe bottom, and a like number of parallel slats, a', forming the top,and havingbetween them the coil-springs e, in combination with thejointed arms attached to the top and bottoni row ot' parallel slats, asdescribed and specified.

2. In a spring-mattress, the combination of the parallel slats t and awith the longjointed arms c, attached to the bottom slats, the shortjointed arms o', attached to the top slats, the coil-springs c, and thecorner-bracing springs e', all as described, and for the purpose setforth.

3. The slats a and a', in combination with thelong jointed armsat thebottom and shorter jointed arms at the top, the coil-springs e, and thebracing-springs e', having one end secured to the lowerjointed arm andthe other end secured to the top outside slat, as described andspecified.

In testimony that I claim the foregoing improvement inspring-mattresses, as above described, I have hereunto set my hand.

ABRAM Q. ALLIS.

Witnesses:

SAM. TRO. SMITH, T. C. JOHNSON.

